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Finding the Fourth Proportional to 122,379.37, 168,883.36 and 68,669.38

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Solution

The fourth proportional to 122,379.37, 168,883.36 and 68,669.38 is: 94,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,379.37 : 168,883.36 = 68,669.38 : x
  2. Step 2: Convert to fraction form
    122,379.37/168,883.36 = 68,669.38/x
  3. Step 3: Cross multiply
    122,379.37x = 168,883.36 × 68,669.38
  4. Step 4: Simplify right side
    122,379.37x = 11,597,115,662.95
  5. Step 5: Solve for x
    x = 11,597,115,662.95/122,379.37
  6. Step 6: Final answer
    x = 94,763.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.